Senior vice president of resources to take the reins as CEO. Core-Mark Holding Co.’s CEO Michael Walsh plans to retire effective Jan. 18, 2013. The South San Francisco, Calif., marketer of fresh and broad-line supply solutions for convenience stores named Thomas Perkins as its new CEO. Perkins has worked as Core-Mark’s senior vice president of…

By John Matthews, founder and president of Gray Cat Enterprises Inc. Feb. 11 was a milepost of sorts – I turned 50! As I enter the second half of my life [sic], I look back at the first 50 years with a great sense of pride and exuberance.  I have been blessed with the opportunities…